<?php
/**
 * PHPExcel
 *
 * Copyright (c) 2006 - 2013 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet_Drawing
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
 * @version    1.7.9, 2013-06-02
 */


/**
 * PHPExcel_Worksheet_Drawing_Shadow
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet_Drawing
 * @copyright  Copyright (c) 2006 - 2013 PHPExcel (http://www.codeplex.com/PHPExcel)
 */
class PHPExcel_Worksheet_Drawing_Shadow implements PHPExcel_IComparable {
	/* Shadow alignment */
	const SHADOW_BOTTOM = 'b';
	const SHADOW_BOTTOM_LEFT = 'bl';
	const SHADOW_BOTTOM_RIGHT = 'br';
	const SHADOW_CENTER = 'ctr';
	const SHADOW_LEFT = 'l';
	const SHADOW_TOP = 't';
	const SHADOW_TOP_LEFT = 'tl';
	const SHADOW_TOP_RIGHT = 'tr';

	/**
	 * Visible
	 *
	 * @var boolean
	 */
	private $_visible;

	/**
	 * Blur radius
	 *
	 * Defaults to 6
	 *
	 * @var int
	 */
	private $_blurRadius;

	/**
	 * Shadow distance
	 *
	 * Defaults to 2
	 *
	 * @var int
	 */
	private $_distance;

	/**
	 * Shadow direction (in degrees)
	 *
	 * @var int
	 */
	private $_direction;

	/**
	 * Shadow alignment
	 *
	 * @var int
	 */
	private $_alignment;

	/**
	 * Color
	 *
	 * @var PHPExcel_Style_Color
	 */
	private $_color;

	/**
	 * Alpha
	 *
	 * @var int
	 */
	private $_alpha;

	/**
	 * Create a new PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function __construct() {
		// Initialise values
		$this->_visible = false;
		$this->_blurRadius = 6;
		$this->_distance = 2;
		$this->_direction = 0;
		$this->_alignment = PHPExcel_Worksheet_Drawing_Shadow::SHADOW_BOTTOM_RIGHT;
		$this->_color = new PHPExcel_Style_Color(PHPExcel_Style_Color::COLOR_BLACK);
		$this->_alpha = 50;
	}

	/**
	 * Get Visible
	 *
	 * @return boolean
	 */
	public function getVisible() {
		return $this->_visible;
	}

	/**
	 * Set Visible
	 *
	 * @param boolean $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setVisible($pValue = false) {
		$this->_visible = $pValue;

		return $this;
	}

	/**
	 * Get Blur radius
	 *
	 * @return int
	 */
	public function getBlurRadius() {
		return $this->_blurRadius;
	}

	/**
	 * Set Blur radius
	 *
	 * @param int $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setBlurRadius($pValue = 6) {
		$this->_blurRadius = $pValue;

		return $this;
	}

	/**
	 * Get Shadow distance
	 *
	 * @return int
	 */
	public function getDistance() {
		return $this->_distance;
	}

	/**
	 * Set Shadow distance
	 *
	 * @param int $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setDistance($pValue = 2) {
		$this->_distance = $pValue;

		return $this;
	}

	/**
	 * Get Shadow direction (in degrees)
	 *
	 * @return int
	 */
	public function getDirection() {
		return $this->_direction;
	}

	/**
	 * Set Shadow direction (in degrees)
	 *
	 * @param int $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setDirection($pValue = 0) {
		$this->_direction = $pValue;

		return $this;
	}

	/**
	 * Get Shadow alignment
	 *
	 * @return int
	 */
	public function getAlignment() {
		return $this->_alignment;
	}

	/**
	 * Set Shadow alignment
	 *
	 * @param int $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setAlignment($pValue = 0) {
		$this->_alignment = $pValue;

		return $this;
	}

	/**
	 * Get Color
	 *
	 * @return PHPExcel_Style_Color
	 */
	public function getColor() {
		return $this->_color;
	}

	/**
	 * Set Color
	 *
	 * @param    PHPExcel_Style_Color $pValue
	 *
	 * @throws    PHPExcel_Exception
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setColor(PHPExcel_Style_Color $pValue = null) {
		$this->_color = $pValue;

		return $this;
	}

	/**
	 * Get Alpha
	 *
	 * @return int
	 */
	public function getAlpha() {
		return $this->_alpha;
	}

	/**
	 * Set Alpha
	 *
	 * @param int $pValue
	 *
	 * @return PHPExcel_Worksheet_Drawing_Shadow
	 */
	public function setAlpha($pValue = 0) {
		$this->_alpha = $pValue;

		return $this;
	}

	/**
	 * Get hash code
	 *
	 * @return string    Hash code
	 */
	public function getHashCode() {
		return md5(($this->_visible ? 't' : 'f') . $this->_blurRadius . $this->_distance . $this->_direction . $this->_alignment . $this->_color->getHashCode() . $this->_alpha . __CLASS__);
	}

	/**
	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
	 */
	public function __clone() {
		$vars = get_object_vars($this);
		foreach ($vars as $key => $value)
		{
			if (is_object($value))
			{
				$this->$key = clone $value;
			}
			else
			{
				$this->$key = $value;
			}
		}
	}
}
